Wing section 13 - Main Spar
Section 13 was a lot about counter sinking and nut plates. I didn't take many pictures. J channel are match drilled against the main spar assembly, but they are used on the top skin. It took me a while to understand that for some reason. I got some help from my wife on the counter sinking task. Instead of point priming the material revealed after counter sinking, i primed the whole flange. 14 Wing Ribs I've already started on next section. A few pictures below.